A Vacuum Switch Vacuum Degree Online Monitoring System

Abstract

The invention discloses a vacuum switch vacuum degree on-line monitoring system. The system comprises a full-scale range sensor, a three-phase ion column, a signal processing and display circuit board, a light emitting diode circuit board, a silicon light solar cell panel, a signal acquisition module, a double-gating switch and a signal processing module. The signal acquisition module employs a high-precision acquisition chip to acquire electrical signals, transmits processed data through an infrared transmitting end, and isolates an infrared transmission pathway from a light emitting diode energy transmission pathway; the double-gating switch is set after signals are sampled and before the signals enter the signal acquisition module; and the signal processing module which converts the physical voltage signals transmitted by the signal acquisition module into digital signals, takes an average value after digitization of a physical quantity, and transmits the value to the signal processing and display circuit board through infrared rays for signal processing, display and real-time monitoring. The system solves the isolation problem of a primary loop and a secondary loop, eliminates safety hidden risks, and eliminates mutual interference among the three phases of a signal acquisition end.

Description

Technical field [0001] The invention relates to an online monitoring system for the vacuum degree of a vacuum switch, belonging to the technical field of online monitoring. Background technique [0002] The vacuum switch is a very promising switching device in the low and medium voltage field. As a new generation of advanced switchgear, the vacuum switch is widely used in my country's current power grid transformation. The vacuum degree of the interrupter of the vacuum switch is one of the main factors that determine its electrical performance. The deterioration of the vacuum degree in the interrupter not only reduces the long-term ability of the vacuum switch to withstand the system voltage and the ability to withstand internal and external conditions during operation. It is extremely difficult to effectively disconnect the fault current. Therefore, it is urgent to monitor the vacuum degree of the vacuum switch during operation. [0003] At present, the testing methods for the v...

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Problems solved by technology

[0020] The purpose of the present invention is to provide an online monitoring system for the vacuum degree of a vacuum switch, which solves the technical problems that the existing online monitoring system is not safe, especially that there are occasional errors and the signal acquisition is easily disturbed, so as to effectively solve the above-mentioned problems. There are technical problems

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